Determination of Electronic Conductance of 100 cm² Single Molten Carbonate Fuel Cell

Abstract:

This work considers electronic conductance in a molten carbonate fuel cell and consequences of its existence. The voltage characteristics of cells show differences between a theoretical maximum circuit voltage and open circuit voltage (OCV). A relationship is assumed between the OCV value and electronic conductance. Based on experimental measurements an appropriate mathematical model was created. The model is used to calculate the temperature dependence of electronic conductance for the most popular types of electrolyte: Li₂CO₃/K₂CO₃. The results obtained point to the possible existence of a very close relationship between electronic conductance and open circuit voltage. This relationship enables OCV to be calculated when electronic conductance is known. Appropriate formulae can be determined. Temperature is one of the factors affecting electronic conductance. Other influencing factors do exist, but their impact on OCV is not well known. This article mentions some of them.

• Periodical: Applied Mechanics and Materials (Volume 346)
• Pages: 23-28
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.346.23
• Online since: August 2013
• Authors: Jarosław Milewski, Wojciech Bujalski, Marcin Wołowicz, Kamil Futyma, Jan Kucowski, Rafał Bernat
• Keywords: Experimental Investigation, Fuel Cell (FC), Molten Carbonate Fuel Cell

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